Schumer pointed to Democrats taking over control of the House — calling the victory "far and away the most significant change" and "great news for America" — as well as highlighting the Democratic gubernatorial wins and state legislatures.

"Republicans lost women, minorities and suburban voters across the country in such margins that it should worry every Republican candidate in 2020 and President Trump," Schumer added.

But Schumer countered that Trump's narrative that Tuesday night was a "tremendous success" for Republicans was "delusional."

Democrats went into 2018 with a deeply unfavorable map. They had to defend more than two dozen Senate seats, with 10 of those in states Trump won in 2016.

Schumer, on Wednesday, argued that "given the map" Democrats did better than some predicted and added that he believed Democrats were facing better odds in 2020.

"We'll have a very good shot in 2020. ... In 2020 our map is better, in 2022 our map is even better, still," Schumer said.

They face a more favorable map in 2020. Democrats will have to defend 12 seats, while Republicans will be defending 21. Democrats have one senator who is already considered vulnerable — Alabama Sen. Doug Jones (D).

Republicans are expected to have anywhere from a 51 to a 54 seat majority in 2019 depending on the outcomes in Florida, Arizona and the Mississippi runoff election that is scheduled for later this month.